<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.w3.org/1999/xhtml">
<head>
    <meta charset="UTF-8"/>
    <title>首页</title>
    <link href="css/base.css" th:href="@{css/base.css}" rel="stylesheet" type="text/css"/>
</head>
<body>
你好，首页..<br />
<div class="btn-1">我是按钮</div>

</body>
</html>